A young Cardiff-born jihadist fighting for Isis in Syria sent his friends a chilling picture showing an apparent stash of home-made bombs - and warned that the British Government should be "afraid" about him returning with his new skills.

Former Cardiff schoolboy Nasser Muthana, 20, posted an online photograph that appears to show improvised explosive devices - IEDs - in a garage.

The image appearing to show home-made bombs

He added the stark warning: "So the UK is afraid I come back with the skills I've gained."

It comes as his younger brother Aseel, 17, vowed to die fighting for Isis - just months after leaving Britain to fight in Syria.

Nasser, who appeared in a terrorist recruitment video for the Islamic State of Iraq and al-Sham (Isis), posted the warning on his Twitter page.